Closes the PostScript document.
This function writes the trailer of the PostScript document.
It also writes the bookmark tree. ps_close() does
not free any resources, which is done by ps_delete().
This function is also called by ps_delete() if it
has not been called before.
Parameters
- psdoc
Resource identifier of the postscript file
as returned by ps_new().
Return Values
Returns TRUE
on success or FALSE
on failure.